Via rc3.org, a pointer to Slate's The Letter of Last Resort, an interesting and somewhat spooky meditation on the British approach to nuclear mutual assured destruction.
Bonus: Stephen I. Schwartz, editor of the Nonproliferation Review at the Monterey Institute of International Studies, and Deepti Choubey, deputy director of the nonproliferation program at the Carnegie Endowment for International Peace, Nuclear Security Spending: Assessing Costs, Examining Priorities. (Via Kos)